Writing tablet support



FIG. 1 is a perspective view of a writing tablet support showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a right-side elevational view thereof; and,

FIG. 6 is a left-side elevational view thereof.

The broken lines are included to show environment and form no part of the claimed design. 

The ornamental design for a writing tablet support, as shown and described. 